DESC: The outdoor siren and strobe light increases the protection of your alarm system by providing an additional deterrent to potential thieves.A simple plug in connection tothe main control console of your alarm system makes this an easy to install addition.The outer casing is completely weatherproof and designed to protect the internal circuits.A powerful 110 decibel siren is accompanied with a glaringstrobe light to ward off any would be burglars.Includes 30 ft. of cable.Compatible with the Home Sentinel WA400 Wireless Securitysystem.